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Finding the Fourth Proportional to 8,563.04, 12,782.08 and 7,938.08

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Solution

The fourth proportional to 8,563.04, 12,782.08 and 7,938.08 is: 11,849.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,563.04 : 12,782.08 = 7,938.08 : x
  2. Step 2: Convert to fraction form
    8,563.04/12,782.08 = 7,938.08/x
  3. Step 3: Cross multiply
    8,563.04x = 12,782.08 × 7,938.08
  4. Step 4: Simplify right side
    8,563.04x = 101,465,173.61
  5. Step 5: Solve for x
    x = 101,465,173.61/8,563.04
  6. Step 6: Final answer
    x = 11,849.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.